In this time, the social structure developed into a hierarchy. This can be documented by various things that were added to graves, for example at Magdalenenberg. In the Bronze Age, people used to live in big settlements. As iron became available, trade routes changed. A new upper class could establish itself. Unlike before, these upper class people liked to live in big houses in the countryside, as a demonstration of their power. Funerary cults also changed, from cremation burials, to burials with sarcophagi. The new upper class used their wealth for import goods, mostly from the Mediterranean. People started settling there around the 2nd millennium B.C.